Millom climate — normals and trends
Millom (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.3 °C and it receives 1,477 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (14.9 °C on average) and the coldest is February (4.1 °C). Rainfall peaks in December.
Millom averages 17 frost days, 0 hot days (≥ 30 °C) and 194 rainy days per year.
Millom has warmed by +1.3 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 29 to 5 per year over the period.
The hottest day of the period reached 26.9 °C (on 19 July 2022) and the coldest -9.9 °C (on 1 March 1947).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
MillomEngland
- coords
- 54.21°, -3.27°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.3°C
Average daily high
11.0°C
Average daily low
7.5°C
Annual rainfall
1,477mm
Sunshine / day
7.5h
Mean relative humidity
83%
Average peak wind
26.1km/h
Seasonal range
10.8°C
Frost days (< 0 °C)
17 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
194 d/yr
Annual snowfall
24.2 cm
Average feels-like high
8.0 °C
Average feels-like low
3.6 °C
Average peak gust
46.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.38 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
26.9 °C
19 July 2022
Coldest day
-9.9 °C
1 March 1947
Wettest day
63 mm
15 September 2025
Windiest day
77.5 km/h
26 February 1990
Strongest gust
162.0 km/h
8 January 2005
Hottest feels-like
28.3 °C
22 July 2021
Coldest feels-like
-15.3 °C
1 March 1947
Snowiest day
16.9 cm
24 April 1981
Sunniest day
16.6 h
22 June 2021
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 5.6 °C | -0.2 °C | 118 mm | -23 mm |
| Feb | 6.5 °C | +0.8 °C | 81 mm | -28 mm |
| Mar | 9.6 °C | +2.4 °C | 39 mm | -64 mm |
| Apr | 12.6 °C | +3.1 °C | 43 mm | -39 mm |
| May | 15.2 °C | +2.6 °C | 79 mm | -6 mm |
| Jun | 16.2 °C | +1.1 °C | 162 mm | +72 mm |
| Jul | 18.0 °C | +1.4 °C | 102 mm | -5 mm |
| Aug | 18.1 °C | +1.4 °C | 112 mm | -19 mm |
| Sep | 15.3 °C | +0.3 °C | 317 mm | +171 mm |
| Oct | 12.6 °C | +0.3 °C | 160 mm | -3 mm |
| Nov | 9.8 °C | +0.8 °C | 287 mm | +128 mm |
| Dec | 8.2 °C | +1.2 °C | 238 mm | +74 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Millom?
Millom has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.3 °C and it receives 1,477 mm of precipitation per year.
What is the hottest day ever recorded in Millom?
The hottest day measured in Millom between 1940 and 2025 was 19 July 2022, reaching 26.9 °C.
What is the coldest day in Millom?
The coldest day measured in Millom between 1940 and 2025 was 1 March 1947, at -9.9 °C.
Does it snow in Millom?
Yes. Millom gets on average 24.2 cm of snow per year and has around 17 frost days.
Has the climate of Millom warmed?
Yes: Millom warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Millom?
The wettest day measured in Millom between 1940 and 2025 was 15 September 2025, with 63 mm of rain in 24 hours.
What was the windiest day in Millom?
The windiest day measured in Millom between 1940 and 2025 was 26 February 1990, with winds reaching 77.5 km/h.
What is the warmest month in Millom?
The warmest month in Millom is August (14.9 °C on average); the coldest is February (4.1 °C).
How much does it rain in Millom?
Millom receives on average 1,477 mm of precipitation per year, spread over about 194 rainy days.
Is it sunny in Millom?
Millom gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Millom?
The heaviest 24-hour snowfall measured in Millom between 1940 and 2025 was 24 April 1981, with 16.9 cm.
Are there tropical nights in Millom?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Millom.
What was the most extreme apparent temperature in Millom?
In Millom, between 1940 and 2025, the highest apparent temperature reached 28.3 °C on 22 July 2021, and the lowest was -15.3 °C on 1 March 1947.
Compare Millom with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Millom